How to Remove Crab Grass From Lawns


Even if you don't know whether you have crab grass or not, you would probably be able to identify it once it was described to you. That's because crab grass is one of the most common grass weeds found in a lawn. Crab grass forms dense mats of grass that spread out along the ground in low-growing blades. This type of crab grass is often observed growing through cracks in the sidewalk with tiny, hair-like roots. Remove crab grass through a system of lawn improvement.

Step 1

Water your lawn to loosen the soil. This will make crab grass easier to remove.

Step 2

Dig up crabgrass with a hoe or garden trowel, being sure to discard all of the roots. Discard the plant.

Step 3

Set your lawn mower to a higher setting when cutting grass. This will shade the ground and prevent crab grass seed from getting enough sunlight to become re-established.

Step 4

Seed a heartier grass onto your lawn, such as Zoysia grass. To do this, rake the lawn with a rake, and then spread grass seed with a broadcast spreader. Thicker, heartier grasses will prevent crab grass from returning.

Step 5

Apply a pre-emergent crab grass spray to your lawn in the spring to prevent crab grass from returning.

Tips and Warnings

  • Always use gloves when handling chemicals such as pre-emergent sprays.

Things You'll Need

  • Garden hose
  • Sprinkler
  • Hoe
  • Trowel
  • Lawn mower
  • Zoysia grass seed
  • Garden rake
  • Broadcast Spreader
  • Pre-emergent chemical spray formulated for crabgrass
  • Chemical sprayer
  • Garden gloves


  • This Old House: How to Remove Crabgrass
  • University of Illinois:Turfgrass Program
  • University of California:Weed Management in Lawns

Who Can Help

  • Word Village:Get Rid of Annoying Crab Grass
  • All About Lawns:10 Steps to Become Crabgrass Free
Keywords: lawn weeds, chemical sprays, eliminating crabgrass

About this Author

After 10 years experience in writing, Tracy S. Morris has countless articles and two novels to her credit. Her work has appeared in national magazines and newspapers, including "Ferrets" and "CatFancy," as well as the "Lexington Herald Leader" and "The Tulsa World," and several websites.